The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2002
Filed:
Nov. 15, 2000
Philip Liu, Hsinchu, TW;
Tony Lee, Sanchung, TW;
Wentchen Lee, Kaohsiung, TW;
Andrew Cheng, Hsinchu, TW;
Mosel Vitelic Inc., Hsinchu, TW;
Abstract
An upper cover plate for an air-tight chamber and a tool for removing the upper cover plate from the chamber are introduced. The upper cover plate integrates a chamber body to form the air-tight chamber, in which the chamber body further includes a top surface for air-tightly matching with a bottom surface of the upper cover plate. The upper cover plate further includes a plurality of thread holes engageable respectively with a plurality of the tools. The present invention is characterized on that at least one of the thread holes is formed as a through thread hole connecting to the bottom surface, and that the respective tool for engaging with the through thread hole includes a portion for penetrating the through thread hole and going beyond the bottom surface. By providing the present invention, the top surface of the chamber body can be utilized as a pivotal plane for the tool to easily perform a helical lifting application upon the upper cover plate through the engaged threads, so that the air-tight state of the chamber can be easily removed.